This CPU is OK, but not the best for gaming. See the last page of this list for performance of gaming CPUs. http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106.html
You see you have no windows and no disk drive. That adds another $150 to the price bringing you to $400 to $450 range.
Hd6670 is not a bad $65 video card. But you will need stronger for high/ultra graphics. Here is a good ref: http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html